On this page, learners will find Geography Grade 12 Climatology Notes, and also the common questions and answers for exam revision.

Climatology is the study of the atmosphere and weather patterns over time. This field of science focuses on recording and analyzing weather patterns throughout the world and understanding the atmospheric conditions that cause them.

Climatology Grade 12 Notes Pdf Download

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sa-weather-map
sa-weather-map
  1. Identify: (a) high-pressure cells A and B (b) the season.
  2. Give the reason for the difference in moisture content of the two winds. (2)
  3. What is the name for the band of low pressure that stretches over the interior and along which the thunderstorms form? (1)
  4. Explain why thunderstorms and rain occur along the band. (2)
  5. On which side of the band of low pressure do the line thunderstorms form – the eastern or western side? (1)
  6. Suggest two negative impacts line thunderstorms have on farming. (2)
  7. Classify the rain from a line thunderstorm as frontal, convection or orographic.

Answers

  1. (a)A = South Atlantic High. B = South Indian High 3 (2) b) summer 3 (1)
  1. The air mass that forms over the warm Mozambique/Agulhas Current 3 of the
    Indian Ocean holds more moisture than the
    air mass that forms over the cold Benguela Current 3 of the Atlantic Ocean. (2)
  2. moisture trough 3 (1)
  3. Warm, moist air is forced to rise fast and high 3. There is extensive cooling and condensation 3. (2)
  4. eastern side 3 (1)
  5. Any two: They bring rain, but heavy rain and hail can cause flooding 3, soil erosion
    3, and crop and livestock damage 3.
    Lightning causes fires 3. (2)
  6. convection

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